The UL-800/801 interfaces with Universal Avionics’ current FMS product line with either 4” or 5” Control Display Units. UL-801 includes an internal VHF Data Radio (VDR), which saves weight, space, and the installation of an external VDR, company officials said. The UL-801 may transmit and receive data via VDR or SATCOM depending upon geographic location, reducing operational costs substantially.